Refering to the Lookup Transformation, Which Statement Is Correct and True

Refering to the Lookup transformation, which statement is correct and true?

A) The lookup condition defines how much memory each of the two caches will consume
B) The lookup condition defines the fields that are used in the search of the data
C) The lookup condition is limited to only the equal operator
D) The lookup condition is designated in the ports tab interface via the "L" check box